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    ],
    "caveats": [
      "One seeded instance per variant/size, repeated twice; repetitions are not independent samples.",
      "Largest sampled size is an observed ladder result, not the true solver capacity.",
      "Every variant and repetition must prove the independently checked optimum within 10 seconds.",
      "The knapsack stress group has only one variant; it is separate from the two-variant main ladder.",
      "Model variables include auxiliary columns; input variables, cities/queens and dimensions remain explicit.",
      "No cross-category capacity ratio or pooled variable count is defined.",
      "All failures and capped solves remain in the denominator; no time ratio uses a censored solve.",
      "Internal solve times are primary; external times also include startup, parsing and model construction.",
      "Capacity, constraints and formulation affect complexity; variable count alone does not."
    ]
  },
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      "seed": 20260906,
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        -13,
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        ],
        "method": "exact minimum-weight-by-profit dynamic programming",
        "oracle_transitions": 6672300,
        "input_sha256": "3ed2df4ae33b74b7e423e7c2b518fafcb65e4615e4cc7d034c9d8e171a841e08"
      },
      "category": "knapsack",
      "variant": "uncorrelated",
      "stress": true,
      "size_unit": "binary variables",
      "modelled_variables": 512
    }
  ],
  "validation": {
    "category_generator_tests": 8,
    "category_runner_tests": 9,
    "solver_changed": false,
    "solver_regressions": "Previously recorded accepted product; no algorithm or ABI change in this study."
  }
}
